#! /usr/bin/env python
# -*- coding: utf-8 -*-

# *************************************************************
#     Filename @  listapend.py
#       Author @  Huoty
#  Create date @  2016-05-25 17:10:31
#  Description @  
# *************************************************************

class A(object):
    def __init__(self):
        self.len = 10
        self.x = range(10)
        self.y = range(8)
        self.z = range(6)

        #for item in (self.x, self.y, self.z):
            #item += [None]*self.len

        t = self.z
        t = [None]*4 + t
        #t += [None]*4

# Script starts from here

if __name__ == "__main__":
    a = A()
    print a.x
    print a.y
    print a.z
